Abstract
The O–H stretching absorptions of 2,6-diarylphenols are composed of two symmetrical bands (intramolecular OH ⋯π and intermolecular OH ⋯ N interactions) in the presence of alkyl cyanides in carbon tetrachloride solution.The equilibrium constants K for the competitive interactions were determined. The equilibrium study suggested that the K values depend on the dihedral angle between the phenol ring and the 2,6-aryl groups. Comparison of log K with ν0(OH)(the frequency of the OH ⋯ N band at infinite dilution in CCl4) revealed a linear relation. Furthermore it was found that the frequency shifts caused by the concentration of cyanide can be explained by the Kirkwood-Bauer-Magat relationship.
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Schedule a callMore From: Journal of the Chemical Society, Perkin Transactions 2
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